Ricerc@Sapienza

In the vision of an operating field, it is often very
difficult to discriminate different tubular structures
such as VEINS, ARTERIES OR NERVES

The aim of this work is to exploit Machine Learning (ML) for the analysis of Ground Penetrating Radar images.
In particular, the objective is to apply a scaled-down version of DenseNet [1] architecture with a multiporse
approach to extract from b-scan images of buried cylinders: the cylinder radius, the cylinder length, the depth
with respect to the ground, and the relative permittivity of the cylinder and of the medium in which the cylinder
is immersed. The cylinders have an infinite length or have a length much greater than the diameter. The main

In this article, we have studied the electrostatic responseof a Polarly Radially Anisotropic (PRA) multilayer circularcylinder. It consists of different components of the permit-tivity in radial and tangential directions for each layer. Wehave considered the familiar model of quasi-static for ob-taining the polarizability and effective permittivity of thePRA multilayer circular cylinder. We also have studied thebehavior of polarizability of PRA multilayer circular cylin-der, as a function of the number of anisotropic alternatinglayers by using a numerical approach.

In this article, the polarizability of a multilayer sphere thatconsists of an alternative sequence of layers of isotropic andspherically radially anisotropic (SRA) material has been in-vestigated. Within each SRA layer, components of the ten-sor permittivity have different values in radial and tangen-tial directions. The mathematical treatment for extractingelectrostatic polarizability has been formulated in terms ofscattered potentials.

This paper introduces the interaction between an ensembleof cylinders and an inhomogeneous plane wave, which isdetermined through a rigorous theoretical approach. Thescattered electromagnetic field by an indefinite number ofinfinite circular cylinders is analyzed through an applica-tion of the generalized Vector Cylinder Harmonics (VCH)expansion.

In this paper, a new model to explain the electromagneticinteraction with a monodispersed system in sedimentationequilibrium is presented. Our approach is based on the dis-persive system as constituted by a large number of strat-ification each characterized a constant particle concentra-tion. The interaction between the electromagnetic field andthe stratified material is taken into consideration thanks tothe T-matrix approach. The concentration of these mediavaries with continuity along the stratified direction.